Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6a1f8eb41f5adbc…

MALICIOUS

PDF

51.2 KB Created: 2020-08-07 08:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bd000c8c48c4e7bac4d62c549f6fe03 SHA-1: 7846ba8916ad3668f744b7ed6dd7c686d700e72a SHA-256: e6a1f8eb41f5adbc8c1ed2e3a8fb8e018f80a35ad1ca55e33f02866ab67c1d6f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique often used to overwhelm security measures or to distribute malicious content. One of the primary links, 'https://ttraff.com/pify?keyword=associativismo+e+organiza%25C3%25A7%25C3%25B5es+volunt%25C3%25A1rias+pdf', is identified as a malicious redirector. The document body itself is heavily obfuscated and contains a mix of legitimate-looking text and what appears to be encoded data, further suggesting a malicious intent to disguise its true purpose.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=associativismo+e+organiza%25C3%25A7%25C3%25B5es+volunt%25C3%25A1rias+pdf
    • http://files.andridgesoundhealing.com/uploads/1/3/1/4/131408928/5965160.pdf
    • http://files.yasminevintage.com/uploads/1/3/2/8/132814146/0ae1bca5eed334.pdf
    • http://files.projectufo.org/uploads/1/3/0/7/130739381/4877757.pdf
    • http://files.eastafricanscholarsfund.org/uploads/1/3/0/7/130776718/vemofuva.pdf
    • https://cdn.shopify.com/s/files/1/0428/7063/6710/files/75342859070.pdf
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/10838184562.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45560821546.pdf
    • https://cdn.shopify.com/s/files/1/0434/0976/8600/files/66845603104.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/72560673782.pdf
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/43701382794.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/kalitelum.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/rolurulabuloriroxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/kipumexubakapadosofobon.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/95284634485.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munuzajutajamarigeregutoz.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/characteristics_of_procedural_programming.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/52551115355.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/xidag.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000836d.bin
33fc62a53fe41d7b69517211fd9d6049007dbc769cc082c0b830b4a0e03a565f
pdf-font-stream PDF embedded font (sfnt) at offset 0x836D 6208 bytes
font_01_sfnt_off0000977e.bin
95a0ffa945fb0b7c1a8a619706f0c13109c6943cff27556be6523b33544cd3ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x977E 12012 bytes